
(series-intervals '(0 1 4 6) -)		; => (1 3 2)

(series-intervals* '(0 1 4 6) -)	; => (1 3 2 -6)

(series-summation 0 '(1 3 2))		; => (0 1 4 6)

(series-cumulative -6 '(1 3 2))		; => (-5 -2 0)

(series-arithmetic 6 15 3)		; => (6 9 12 15)

(series-geometric 4 2 64)		; => (4 8 16 32 64)

(series-fibonacci 0 1 34)		; => (0 1 1 2 3 5 8 13 21 34)

(nCr 12 4)				; => 495

(nPr 12 4)				; => 11880

(permutation-n-seq 3 2)			; => ((0 2) (1 1) (2 2))

(permutation-n 3 2)			; => (2 1 0)
